Added time RTC library

Makefile

@@ -1,7 +1,7 @@
 LD = i686-elf-ld
 LFLAGS = -melf_i386 -nostdlib -O2 -T link.ld 
 
-all: prepare cpu kernel_code drivers libc shell mem link iso
+all: prepare cpu kernel_code drivers libc userspace mem link iso
 
 prepare:
 	mkdir -p obj/
@@ -24,9 +24,9 @@ libc:
 	make -C kernel/libc
 	cp kernel/libc/*.o obj/
 
-shell:
+userspace:
-	make -C kernel/shell
+	make -C kernel/userspace
-	cp kernel/shell/*.o obj/
+	cp kernel/userspace/*.o obj/
 
 mem:
 	make -C kernel/mem

kernel/cpu/gdt.asm

@@ -1,7 +1,7 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;             iceOS Kernel            ;
+;             vulcanOS Kernel         ;
 ; Developed by Marco 'icebit' Cetica  ;
-;              (c) 2019               ;
+;              (c) 2019-2021          ;
 ;        Released under GPLv3         ;
 ;   https://github.com/ice-bit/iceOS  ;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

kernel/cpu/idt.asm

@@ -1,7 +1,7 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;             iceOS Kernel            ;
+;             vulcanOS Kernel         ;
 ; Developed by Marco 'icebit' Cetica  ;
-;              (c) 2019               ;
+;              (c) 2019-2021          ;
 ;        Released under GPLv3         ;
 ;   https://github.com/ice-bit/iceOS  ;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

kernel/cpu/interrupts.asm

@@ -1,7 +1,7 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;             iceOS Kernel            ;
+;             vulcanOS Kernel         ;
 ; Developed by Marco 'icebit' Cetica  ;
-;              (c) 2019               ;
+;              (c) 2019-2021          ;
 ;        Released under GPLv3         ;
 ;   https://github.com/ice-bit/iceOS  ;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

kernel/cpu/kernel_loader.asm

@@ -1,7 +1,7 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;             iceOS Kernel            ;
+;             vulcanOS Kernel         ;
 ; Developed by Marco 'icebit' Cetica  ;
-;              (c) 2019-2020          ;
+;              (c) 2019-2021          ;
 ;        Released under GPLv3         ;
 ;   https://github.com/ice-bit/iceOS  ;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

kernel/cpu/ports.asm

@@ -1,7 +1,7 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;             iceOS Kernel            ;
+;             vulcanOS Kernel         ;
 ; Developed by Marco 'icebit' Cetica  ;
-;              (c) 2019               ;
+;              (c) 2019-2021          ;
 ;        Released under GPLv3         ;
 ;   https://github.com/ice-bit/iceOS  ;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

kernel/drivers/fs.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/drivers/gdt.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/drivers/idt.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/drivers/initrd.h

@@ -1,3 +1,10 @@
+/**************************************
+ *          VulcanOS Kernel           *
+ * Developed by Marco 'icebit' Cetica * 
+ *            (c) 2019-2021           *
+ *       Released under GPLv3         *
+ * https://github.com/ice-bit/iceOS   *
+ ***************************************/
 #ifndef INITRD_H
 #define INITRD_H
 /* Ramdisk is a file system that is loaded along with the kernel

kernel/drivers/isr.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/drivers/keyboard.c

@@ -17,7 +17,7 @@
 #include "isr.h"
 #include "ports.h"
 #include "tty.h"
-#include "../shell/shell.h"
+#include "../userspace/shell.h"
 #include "../libc/stdio.h"
 
 static void keyboard_callback();

kernel/drivers/keyboard.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/drivers/ports.h

@@ -1,3 +1,10 @@
+/**************************************
+ *          VulcanOS Kernel           *
+ * Developed by Marco 'icebit' Cetica * 
+ *            (c) 2019-2021           *
+ *       Released under GPLv3         *
+ * https://github.com/ice-bit/iceOS   *
+ ***************************************/
 #ifndef _PORTS_H
 #define _PORTS_H
 

kernel/drivers/timer.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/drivers/tty.h

@@ -1,11 +1,10 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/
-
 #ifndef _TTY_H_
 #define _TTY_H_
 

kernel/kernel_main.c

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/
@@ -12,7 +12,7 @@
 #include "drivers/keyboard.h"
 #include "mem/paging.h"
 #include "mem/kheap.h"
-#include "shell/shell.h"
+#include "userspace/shell.h"
 #include "libc/stdio.h"
 #include "libc/assert.h"
 

kernel/libc/Makefile

@@ -1,4 +1,4 @@
-OBJS = stdio.o string.o assert.o
+OBJS = stdio.o string.o assert.o time.o
 
 CC = i686-elf-gcc # cross-compiler
 CFLAGS = -m32 -fno-stack-protector -ffreestanding -Wall -Wextra -Werror -g -c

kernel/libc/assert.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/libc/stdio.h

@@ -1,11 +1,10 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/
-
 #ifndef _STDIO_H_
 #define _STDIO_H_
 

kernel/libc/string.h

@@ -1,11 +1,10 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/
-
 #ifndef _STRING_H_
 #define _STRING_H_
 

kernel/libc/time.c

@@ -0,0 +1,38 @@
+#include "time.h"
+#include "../drivers/ports.h"
+
+// Check whether CMOS is updated or not
+static uint8_t is_cmos_updated() {
+    outb(CMOS_ADDRESS, 0x0A);
+    
+    return (inb(CMOS_DATA) & 0x80);
+}
+
+// Get CMOS register's status
+static uint8_t reg_status(int32_t reg) {
+    outb(CMOS_ADDRESS, reg);
+    
+    return inb(CMOS_DATA);
+}
+
+
+time_t cmos_reader() {
+    while(is_cmos_updated()); // Wait until the CMOS is being updated
+    
+    time_t tm;
+
+    tm.second = BCD_CONVERTER(reg_status(TIME_R_SECOND));
+    tm.minute = BCD_CONVERTER(reg_status(TIME_R_MINUTE));
+    tm.hour = BCD_CONVERTER(reg_status(TIME_R_HOUR));
+    tm.day = BCD_CONVERTER(reg_status(TIME_R_DAY));
+    tm.month = BCD_CONVERTER(reg_status(TIME_R_MONTH));
+    tm.year = BCD_CONVERTER(reg_status(TIME_R_YEAR));
+
+    return tm;
+}
+
+uint32_t get_time(uint32_t field) {
+    while(is_cmos_updated()); // Wait the CMOS is being updated
+
+    return BCD_CONVERTER(reg_status(field));
+}

kernel/libc/time.h

@@ -0,0 +1,42 @@
+/**************************************
+ *          VulcanOS Kernel           *
+ * Developed by Marco 'icebit' Cetica * 
+ *            (c) 2019-2021           *
+ *       Released under GPLv3         *
+ * https://github.com/ice-bit/iceOS   *
+ ***************************************/
+/* Get time reading the RTC(real time clock) CMOS on the motherboard */
+#ifndef TIME_H
+#define TIME_H
+
+#include <stdint.h>
+
+// Define RTC field registers
+#define TIME_R_YEAR 0x09
+#define TIME_R_MONTH 0x08
+#define TIME_R_DAY 0x07
+#define TIME_R_HOUR 0x06
+#define TIME_R_MINUTE 0x05
+#define TIME_R_SECOND 0x04
+//#define TIME_R_CENTURY 0x32 
+
+// Define RTC address
+#define CMOS_ADDRESS 0x70
+#define CMOS_DATA 0x71
+
+// Convert BCD encoed values to binary
+#define BCD_CONVERTER(n) ((n / 16) * 10 + (n & 0xF))
+
+typedef struct {
+    uint8_t second;
+    uint8_t minute;
+    uint8_t hour;
+    uint8_t day;
+    uint8_t month;
+    uint8_t year;
+} time_t;
+
+time_t cmos_reader();
+uint32_t get_time(uint32_t field);
+
+#endif

kernel/mem/kheap.h

@@ -1,12 +1,11 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/
 
-
 /*** Heap implementation from James Molloy's tutorial:
   http://www.jamesmolloy.co.uk/tutorial_html/7.-The%20Heap.html ***/
 

kernel/mem/ordered_array.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/mem/paging.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/

kernel/userspace/shell.h

@@ -1,7 +1,7 @@
 /**************************************
- *          iceOS Kernel              *
+ *          VulcanOS Kernel           *
  * Developed by Marco 'icebit' Cetica * 
- *            (c) 2019                *
+ *            (c) 2019-2021           *
  *       Released under GPLv3         *
  * https://github.com/ice-bit/iceOS   *
  ***************************************/